Derivatives And Hedging Activities (Details) (USD $) In Millions	Jul. 29, 2011	Apr. 29, 2011
Euro [Member]
Cash Flow Hedges	$ 122.5	$ 104.0
Balance Sheet Contracts	131.7	253.7
British Pound Sterling [Member]
Cash Flow Hedges	27.0	20.9
Balance Sheet Contracts	55.8	70.8
Australian Dollar [Member]
Balance Sheet Contracts	55.6	34.4
Canadian Dollar [Member]
Balance Sheet Contracts	33.4	56.0
Other [Member]
Balance Sheet Contracts	$ 60.6	$ 52.6